1.
to make a mistake :
If you do what she tells you, you won't go far wrong.
Where did we go wrong with those kids (= what mistakes did we make for them to behave so badly) ?
2.
( of a machine ) to stop working correctly :
My watch keeps going wrong.
3.
to experience problems or difficulties :
The relationship started to go wrong when they moved abroad.
What else can go wrong (= what other problems are we going to have) ?